CN212159005U - Test fixture for LCD - Google Patents

Abstract

The utility model provides a test fixture for LCD, comprising a base plate, the side support frame, the bracing piece, the gear, one-way bearing, the rack, the link, take drive assembly, the lead screw, the gear frame, hollow support, the air pump, including a motor, an end cap, a controller, and a cover plate, X-Y actuating mechanism and optical probe, two side support frames pass through bracing piece movable mounting on the bottom plate, the gear passes through one-way bearing and overlaps the power take off end at the motor admittedly, two racks respectively with gear engagement, the rack is respectively through link and bracing piece fixed connection, the lead screw is connected with motor power, the gear frame cooperation is installed on the side support frame, and form screw thread transmission between lead screw and the gear frame, hollow support leads to the center. Through the adjustment of the distance between flexible side support frame and the side support frame and then carry out three supports to the LCD subassembly, and then also can support the test when facing the LCD of curved surface, let in positive atmospheric pressure through in the hollow support and can effectually cushion when LCD falls into on the hollow support.

Description

Test fixture for LCD

Technical Field

The utility model relates to a test fixture technical field specifically is a test fixture for LCD.

Background

Along with the high-speed development of display related electronic products such as smart phones, tablet computers, notebooks, high-definition televisions and smart watches, the market demand for display screen modules is also increasing. This also puts higher demands on the productivity, yield, etc. of display screen manufacturers, and the LCD lifetime as an important index is required to be tested with emphasis.

Publication No. CN209544397U provides an OLED display screen life-span test fixture, and this device passes through actuating mechanism drive L type stopper and moves, and then carries on spacingly to the display screen, utilizes optical probe to detect after that, but follows up with the more and more curved surface screen of market demand and come up to the fortune, and above-mentioned prior art is only fit for carrying out spacing test to planar display screen.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a test fixture for LCD to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a test fixture for LCD, includes bottom plate, side support frame, bracing piece, gear, one-way bearing, rack, link, takes drive assembly, lead screw, drive frame, hollow support, air pump, motor, X-Y actuating mechanism and optical probe, X-Y actuating mechanism installs the top at the bottom plate through the supporting leg, and the bottom of X-Y actuating mechanism's power take off part is equipped with optical probe for drive optical probe is at X-Y planar motion, wherein:

the two side supporting frames are oppositely arranged, supporting rods are respectively and movably arranged in sleeves at the lower sides of the side supporting frames, the supporting rods in the side supporting frames are respectively and movably arranged in guide grooves on the bottom plate, the motor is arranged at the center of the bottom plate through bolts, the gear is fixedly sleeved at the power output end of the motor through a one-way bearing, the two racks are respectively positioned at the bottom of the bottom plate and are respectively meshed with the gear, the two racks are respectively and fixedly connected with one supporting rod in the two side supporting frames through a connecting frame, the screw rod is arranged on the bottom plate through a bearing and is in power connection with the motor through a belt transmission assembly, the two ends of the transmission frame are matched and arranged in the guide grooves which are transversely arranged at the outer sides of the side supporting frames, the screw rod penetrates through the transmission frame and forms thread transmission with the transmission frame, and, and the air pump is communicated with the hollow bracket.

Preferably, the belt transmission assembly comprises a large belt wheel, a small belt wheel and a belt, the large belt wheel is fixedly sleeved on the power output end of the motor through a one-way bearing, the small belt wheel is fixedly sleeved on the end portion of the screw rod, and the belt is sleeved on the large belt wheel and the small belt wheel.

Preferably, the one-way bearing in the large pulley and the one-way bearing in the gear are installed in opposite directions.

Preferably, the end part of the hollow support is provided with a sucker, wherein the sucker is communicated with the hollow support.

Preferably, the X-Y driving mechanism consists of linear motion mechanisms which are arranged perpendicularly to each other.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a distance adjustment between flexible side support frame and the side support frame and then carry out three supports to the LCD subassembly, and then also can support the test when the LCD in the face of curved surface, lets in positive air pressure through the hollow support and can effectually cushion when LCD falls into on the hollow support.

Drawings

Fig. 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

fig. 3 is a side view of the overall structure of the present invention.

In the figure: the device comprises a base plate 1, a side supporting frame 2, a supporting rod 3, a gear 4, a one-way bearing 5, a rack 6, a connecting frame 7, a belt transmission assembly 8, a screw rod 9, a transmission frame 10, a hollow support 11, an air pump 12, a motor 13, a 14X-Y driving mechanism, an optical probe 15, a large belt wheel 81, a small belt wheel 82, a belt 83 and a sucking disc 111.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

referring to fig. 1 to 3, the present invention provides a technical solution:

the utility model provides a test fixture for LCD, includes bottom plate 1, side support frame 2, bracing piece 3, gear 4, one-way bearing 5, rack 6, link 7, belt drive assembly 8, lead screw 9, driving frame 10, hollow support 11, air pump 12, motor 13, X-Y actuating mechanism 14 and optical probe 15, wherein:

the two side supporting frames 2 are oppositely arranged, wherein the supporting rods 3 are respectively and movably arranged in sleeves at the lower sides of the side supporting frames 2, the supporting rods 3 in the side supporting frames 2 are respectively and movably arranged in guide grooves on the bottom plate 1, so that the side supporting frames 2 can be close to or away from each other and the distance between the side supporting frames 2 and the bottom plate 1 can be adjusted, the motor 13 is arranged at the center of the bottom plate 1 through bolts, the gear 4 is fixedly sleeved at the power output end of the motor 13 through a one-way bearing 5, the two racks 6 are respectively positioned at the bottom of the bottom plate 1 and are respectively meshed with the gear 4, wherein the two racks 6 are respectively and fixedly connected with one supporting rod 3 in the two side supporting frames 2 through the connecting frame 7, so that the two racks 6 move towards opposite directions when the gear 4 rotates, and further the racks 6 drive the, the screw rod 9 is mounted on the bottom plate 1 through a bearing and is in power connection with the motor 13 through a belt transmission assembly 8, wherein the belt transmission assembly 8 comprises a large belt wheel 81, a small belt wheel 82 and a belt 83, the large belt wheel 81 is fixedly sleeved on the power output end of the motor 13 through a one-way bearing 5, the small belt wheel 82 is fixedly sleeved on the end part of the screw rod 9, the belt 83 is sleeved on the large belt wheel 81 and the small belt wheel 82, the mounting directions of the one-way bearing 5 in the large belt wheel 81 and the one-way bearing 5 in the gear 4 are opposite, so that the one-way bearing 5 in the gear 4 is in a locking state and the gear 4 rotates along with the motor 13 when the motor 13 rotates forwards, and the one-way bearing 5 in the large belt wheel 81 is in the locking state and the large belt wheel 81 rotates along with the motor 13 when the motor 13 rotates backwards, therefore the motor 13 enables the side support frame 2 to have two motion states when, the two ends of the transmission frame 10 are arranged in the guide grooves which are transversely arranged on the outer sides of the side support frames 2 in a matched mode, therefore, when the side support frames 2 are close to or far away from each other, the transmission frame 10 cannot generate motion interference, and the transmission frame 10 can drive the side support frames 2 to rise or fall along the support rods 3 when rising or falling, wherein the screw rod 9 penetrates through the transmission frame 10 and forms thread transmission with the transmission frame 10, the hollow support 11 is arranged at the center of the bottom plate 1 through a bolt, the air pump 12 is fixedly arranged on the bottom plate 1 through a bolt, wherein the air pump 12 is communicated with the hollow support 11 through a connecting pipe, the end part of the hollow support 11 is provided with a sucker 111, and the sucker 111 is communicated with;

the X-Y driving mechanism 14 is arranged above the bottom plate 1 through supporting legs, the X-Y driving mechanism 14 is composed of linear motion mechanisms which are perpendicular to each other, an optical probe 15 is arranged at the bottom of a power output part of the X-Y driving mechanism 14, and then the X-Y driving mechanism 14 can drive the optical probe 15 to move on an X-Y plane to achieve a testing effect.

The utility model discloses a theory of operation does: when the service life of the curved-surface LCD is tested, firstly, positive air pressure is introduced into the hollow support 11 by the air pump 12, then the sucker 111 on the hollow support 11 sprays air outwards, at the moment, the curved-surface LCD is placed on the sucker 111, the rigid impact with the sucker 111 can be avoided, and the buffering effect is effectively realized, then when the air pump 12 stops air inflow into the hollow support 11, the sucker 111 preliminarily limits the curved-surface LCD, then the motor 13 rotates forwards, at the moment, the one-way bearing 5 in the gear 4 is in a locking state, further, the gear 4 rotates along with the motor 13, then the gear 4 drives the two racks 6 to do linear motion, further, the two racks 6 respectively drive the support rods 3 in the side support frames 2 to move, at the moment, the two side support frames 2 move towards the direction close to each other, and stop moving when the side support frames 2 move to the position under the curved-, then the motor 13 rotates reversely, at this time, the one-way bearing 5 in the large belt pulley 81 is in a locked state, and then the large belt pulley 81 rotates along with the motor 13, then the power is transmitted to the small belt pulley 82 through the belt 83, at this time, the screw rod 9 rotates and then the transmission frame 10 is driven to rise, then the transmission frame 10 drives the side support frame 2 to rise along the support rod 3, when the side support frame 2 contacts with the bottom of the curved LCD, the motion is stopped, at this time, the limit of the curved LCD is completed, then the X-Y driving mechanism 14 drives the optical probe 15 to perform circulating type searchlighting along the whole display surface of the curved LCD, further the display time of the curved LCD is tested, the size of the same batch of LCDs is consistent, the test mode is sampling detection, therefore, adjustment is not required again after the position of the side support frame 2 is fixed, and after the LCD test of the curved LCD is completed, the, the suction cups 111 on the hollow frame 11 are blown outward, thereby facilitating the removal of the curved LCD from the suction cups 111.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a test fixture for LCD, includes bottom plate (1), side support frame (2), bracing piece (3), gear (4), one-way bearing (5), rack (6), link (7), area drive assembly (8), lead screw (9), transmission frame (10), hollow support (11), air pump (12), motor (13), X-Y actuating mechanism (14) and optical probe (15), X-Y actuating mechanism (14) are installed in the top of bottom plate (1) through the supporting leg, and the bottom of the power take off part of X-Y actuating mechanism (14) is equipped with optical probe (15) for drive optical probe (15) are at X-Y planar motion, its characterized in that:

the two side supporting frames (2) are oppositely arranged, wherein supporting rods (3) are respectively and movably arranged in sleeves on the lower sides of the side supporting frames (2), the supporting rods (3) in the side supporting frames (2) are respectively and movably arranged in guide grooves on the bottom plate (1), the motor (13) is arranged at the center of the bottom plate (1) through bolts, the gear (4) is fixedly sleeved at the power output end of the motor (13) through a one-way bearing (5), the two racks (6) are respectively positioned at the bottom of the bottom plate (1) and are respectively meshed with the gear (4), the two racks (6) are respectively and fixedly connected with one supporting rod (3) in the two side supporting frames (2) through a connecting frame (7), the screw rod (9) is arranged on the bottom plate (1) through a bearing and is in power connection with the motor (13) through a belt transmission assembly (8), the both ends cooperation of driving frame (10) is installed in the guide slot that is horizontal setting in side support frame (2) outside, and lead screw (9) run through driving frame (10) and with driving frame (10) between form the screw drive, hollow support (11) are installed in the center department of bottom plate (1) through the bolt, and air pump (12) and hollow support (11) intercommunication.

2. The testing fixture for LCD of claim 1, wherein: the belt transmission assembly (8) comprises a large belt wheel (81), a small belt wheel (82) and a belt (83), the large belt wheel (81) is fixedly sleeved on the power output end of the motor (13) through the one-way bearing (5), the small belt wheel (82) is fixedly sleeved on the end portion of the screw rod (9), and the belt (83) is sleeved on the large belt wheel (81) and the small belt wheel (82).

3. The testing fixture for LCD of claim 1, wherein: the mounting direction of the one-way bearing (5) in the large belt wheel (81) is opposite to that of the one-way bearing (5) in the gear (4).

4. The testing fixture for LCD of claim 1, wherein: the end part of the hollow support (11) is provided with a sucker (111), wherein the sucker (111) is communicated with the hollow support (11).

5. The testing fixture for LCD of claim 1, wherein: the X-Y driving mechanism (14) is composed of linear motion mechanisms which are arranged vertically.

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